Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1977-09-21
1979-08-21
Milestone, Norma S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260343, 549 10, 549 11, C07D32300, C07D32700, C07D32100, C07D31300
Patent
active
041653211
ABSTRACT:
A process is provided for the continuous or semi-continuous production of hetero-macrocyclic compounds including lactones and cyclic esters. The process involves the catalyzed depolymerization of a linear polyester at an elevated temperature and under reduced pressure in the presence of a specified amount of monocarboxylate moieties and while providing top-to-bottom mixing throughout essentially the total volume of the reaction mass.
REFERENCES:
patent: 2092031 (1937-09-01), Spanagel
patent: 3431279 (1969-03-01), Ehrhart
Chemical Abstracts, vol. 86, 156163s.
Harris Eugene G.
White John F.
Baracka Gerald A.
Milestone Norma S.
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